Means for controlling pivotal doors in nuclear plants

Details Means for controlling pivotal doors in nuclear plants Means for controlling pivotal doors in nuclear plants

1981-05-18

1985-03-05

Kannan, Philip C.

Movable or removable closures

Mounted for optional movements

On alternative axes

E05D 1550

Patent

active

045022453

ABSTRACT:
Means for controlling pivotal doors in nuclear plants, more specifically to control doors separating storage basins for nuclear materials. Instead of providing the control means on the wall structure of juxtaposed door openings, the control means are mounted on the door panels. They include a pair of fluid-operated cylinder-and-piston motors, the direction of operation of the pistons being parallel to an edge of the door panel. The cylinder-and-piston motors are preferably mounted on an edge of the door panel. Each motor operates a linkage that includes two rods, of which one is raised when the other is lowered. One of the two rods controls abutment means precluding the door from pivoting about one of its edges, and allowing the door to pivot only about the other of its edges. The other of the two rods controls latching means which, in one position thereof firmly clamp the door panel against the cooperating door opening to exert a sealing effect and which, in the other position thereof, frees the door panel and terminates the sealing effect.

REFERENCES:
patent: 707910 (1902-08-01), Fischer et al.
patent: 1550205 (1925-08-01), Cemazar
patent: 1560537 (1925-11-01), Cole
patent: 2317798 (1943-04-01), Otto
patent: 2357397 (1944-09-01), Fuller
patent: 4222149 (1980-09-01), Holbek

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